The turbo is OK. I just haven't figured out what to do with the sled yet. I wanted to say had a turbo vmax4!! I already have 2 trail sleds, and 2 field beating sleds, and a race sled so I tried to make it a 660 ice drag sled but just ran out of time this year. Got gears and clutch parts the week after the ice melted enough to not get back on down here.next year I will have more time to play with it. Quadzilla says that these turbos are hard to dial in and be consistent so we will see how I make out. If I can't make it consistent I throw a snow track in it and just ride it... Hard to pay that kind of money for something then throw more money in it and only make 4 passes on it. I think I put about 5 miles on it this winter. But hey, it sounds like its hauling A$$!! Lol